US4174823A - Motor vehicle rear-view mirrors - Google Patents

Motor vehicle rear-view mirrors Download PDF

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Publication number
US4174823A
US4174823A US05/871,445 US87144578A US4174823A US 4174823 A US4174823 A US 4174823A US 87144578 A US87144578 A US 87144578A US 4174823 A US4174823 A US 4174823A
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US
United States
Prior art keywords
reflective element
housing
rear view
view mirror
pillars
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/871,445
Inventor
Christopher J. Sutton
Leonard Trigg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Desmo Ltd
Original Assignee
Desmo Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Desmo Ltd filed Critical Desmo Ltd
Priority to US05/871,445 priority Critical patent/US4174823A/en
Application granted granted Critical
Publication of US4174823A publication Critical patent/US4174823A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/02—Rear-view mirror arrangements
    • B60R1/06—Rear-view mirror arrangements mounted on vehicle exterior
    • B60R1/062—Rear-view mirror arrangements mounted on vehicle exterior with remote control for adjusting position
    • B60R1/064—Rear-view mirror arrangements mounted on vehicle exterior with remote control for adjusting position by manually powered actuators
    • B60R1/066—Rear-view mirror arrangements mounted on vehicle exterior with remote control for adjusting position by manually powered actuators for adjusting the mirror relative to its housing
    • B60R1/068—Rear-view mirror arrangements mounted on vehicle exterior with remote control for adjusting position by manually powered actuators for adjusting the mirror relative to its housing using cables

Definitions

  • This invention relates to rear view mirrors for motor vehicles of the kind comprising a housing in relation to which the reflective element is adjustable to enable the driver to obtain the required rear view.
  • the reflective element is mounted in the housing by a central ball or equivalent adjustable joint.
  • the housing is usually in the form of a cowl with a rim extending over the edge of the reflective element.
  • It is an object of the present invention to provide a rear view mirror for a motor vehicle comprising a housing adapted to be secured to the vehicle, a reflective element mounted in the housing by an adjustable joint which enables the reflective element to be adjusted in relation to the housing to alter the rear view, wherein the housing is a moulding of self-skinning foam plastics material which bears resiliently on the reflective element remote from the adjustable joint.
  • self-skinning foam plastics is meant a plastics which in the course of the moulding process, while maintaining a cellular structure in the interior of the moulding, forms on its exterior surface a continuous skin.
  • the foam plastics is preferably a self-skinning polyurethane foam. This material is inherently resilient, and yet has self-damping properties which are utilised in the invention to damp vibrations of the reflective element.
  • the housing may bear resiliently on the back of the reflective element near its periphery and substantially in the direction of movement of the periphery about the adjustable joint and with counteracting effect on opposite sides of the adjustable joint.
  • There may be resilient projection in the form, for example, of pillars of elastic foam material extending from the housing to engage the back of the reflective element.
  • the pillars are preferably pre-loaded when the reflective element is assembled in the housing, to an extent sufficient to ensure contact between the pillars and the back of the reflective element in all adjusted positions of the reflective element.
  • vibration damping is provided at a position where a small force will be most effective in damping vibration.
  • the bearing contact also assists the adjustable joint in maintaining adjustment. This is particularly valuable when the adjustable joint is associated with a remote control mechanism enabling an exterior rear view mirror to be adjusted from inside the vehicle. The bearing contact then helps to overcome any instability of the reflective element due to backlash in the remote control mechanism.
  • rear view mirrors of the kind described will usually be exterior mirrors mounted on the wing, door, or windscreen pillar or other part of the vehicle body, the invention is also applicable to such mirrors intended as interior rear view mirrors for which the foam plastics housing can be of particular advantage in afforting protection against personal injury.
  • FIG. 1 is a diagrammatic plan section of one form of rear view mirror according to the invention.
  • FIGS. 2 and 3 are fragmentary cross-sectional views of alternative pillars of the rear view mirror of FIG. 1.
  • a reflective element 1 adjustable by remote control mechanism 2 about the centre of an adjustable joint 3 is mounted within a cowl 4 of a housing 5 moulded in self-skinning foam plastics.
  • a metal plate 6 is moulded into the housing to re-inforce it and this is connected by a yieldable joint 7 to an attachment member 8 for securing the rear mirror to the vehicle body.
  • the yieldable joint 7 may be of the kind which allows the rear view mirror to deflect when struck and then restores it to the operative position afterwards. Alternatively the yieldable joint may merely allow the rear view mirror to move out of the way when struck after which it must be put back manually.
  • pillars 9 are formed in the foam plastics moulding of the housing 5 on opposite sides of the adjustable joint 3 and extend forwards to bear on the back 14 of the reflective element near its periphery 11.
  • the pillars 9 are axially pre-loaded and will continue, for much of the range of the adjustment, to bear at 16 on the back of the reflective element when the adjacent edge of the reflective element is moved away from the back of the cowl.
  • the pillars 9 may buckle or distort but will still maintain pressure on the reflective element. As indicated by FIG.
  • FIG. 2 there may be two pillars 9 on each side of the adjustable joint so that the four pillars may be considered as lying at the corners of a rectangle.
  • FIG. 3 there may be a single pillar 9" of relatively thin elongated cross-section on each side of the adjustable joint.
  • the two pillars 9" are parallel to one another.
  • the pillars 9' or 9" maintain pressure on the back of the reflective element tending to restore the reflective element to an equilibrium position so that any back-lash in the remote control mechanism 2 is taken up.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Mechanical Engineering (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)

Abstract

A rear view mirror for a motor vehicle of the kind having a stationary housing relative to which the reflective element is adjustable to give the required rear view has a housing which is moulded in self-skinning foam plastics. The housing has resilient pillars which bear on the back of the reflective element near its periphery. The pillars extend from the part of the housing behind the reflective element. Vibration of the reflective element is damped by contact with the resilient material of the housing and the reflective element is kept in its adjusted position. This is very useful when the reflective element is adjustable by remote control.

Description

This invention relates to rear view mirrors for motor vehicles of the kind comprising a housing in relation to which the reflective element is adjustable to enable the driver to obtain the required rear view. The reflective element is mounted in the housing by a central ball or equivalent adjustable joint. The housing is usually in the form of a cowl with a rim extending over the edge of the reflective element.
With rear view mirrors of the kind described vibration of the reflective element can be a problem and it is an object of the present invention to provide means of reducing this vibration.
It is an object of the present invention to provide a rear view mirror for a motor vehicle comprising a housing adapted to be secured to the vehicle, a reflective element mounted in the housing by an adjustable joint which enables the reflective element to be adjusted in relation to the housing to alter the rear view, wherein the housing is a moulding of self-skinning foam plastics material which bears resiliently on the reflective element remote from the adjustable joint.
By "self-skinning foam plastics" is meant a plastics which in the course of the moulding process, while maintaining a cellular structure in the interior of the moulding, forms on its exterior surface a continuous skin.
The foam plastics is preferably a self-skinning polyurethane foam. This material is inherently resilient, and yet has self-damping properties which are utilised in the invention to damp vibrations of the reflective element.
The housing may bear resiliently on the back of the reflective element near its periphery and substantially in the direction of movement of the periphery about the adjustable joint and with counteracting effect on opposite sides of the adjustable joint. There may be resilient projection in the form, for example, of pillars of elastic foam material extending from the housing to engage the back of the reflective element. The pillars are preferably pre-loaded when the reflective element is assembled in the housing, to an extent sufficient to ensure contact between the pillars and the back of the reflective element in all adjusted positions of the reflective element. There could, for example, be several separate pillars of columnar form or a pair or pairs of pillars of relatively thin but elongated cross-section, the pillars of the or each pair being arranged parallel to one another on opposite sides of the adjustable joint.
As foam material of the housing bears on the reflective element directly, vibration damping is provided at a position where a small force will be most effective in damping vibration. The bearing contact also assists the adjustable joint in maintaining adjustment. This is particularly valuable when the adjustable joint is associated with a remote control mechanism enabling an exterior rear view mirror to be adjusted from inside the vehicle. The bearing contact then helps to overcome any instability of the reflective element due to backlash in the remote control mechanism.
Although rear view mirrors of the kind described will usually be exterior mirrors mounted on the wing, door, or windscreen pillar or other part of the vehicle body, the invention is also applicable to such mirrors intended as interior rear view mirrors for which the foam plastics housing can be of particular advantage in afforting protection against personal injury.
Embodiments of the invention are illustrated in the accompanying drawings in which:
FIG. 1 is a diagrammatic plan section of one form of rear view mirror according to the invention.
FIGS. 2 and 3 are fragmentary cross-sectional views of alternative pillars of the rear view mirror of FIG. 1.
A reflective element 1 adjustable by remote control mechanism 2 about the centre of an adjustable joint 3 is mounted within a cowl 4 of a housing 5 moulded in self-skinning foam plastics. A metal plate 6 is moulded into the housing to re-inforce it and this is connected by a yieldable joint 7 to an attachment member 8 for securing the rear mirror to the vehicle body. The yieldable joint 7 may be of the kind which allows the rear view mirror to deflect when struck and then restores it to the operative position afterwards. Alternatively the yieldable joint may merely allow the rear view mirror to move out of the way when struck after which it must be put back manually.
In the embodiment of FIG. 1, inside the cavity of the cowl 4, pillars 9 are formed in the foam plastics moulding of the housing 5 on opposite sides of the adjustable joint 3 and extend forwards to bear on the back 14 of the reflective element near its periphery 11. In the middle position of the adjustment shown in the drawing the pillars 9 are axially pre-loaded and will continue, for much of the range of the adjustment, to bear at 16 on the back of the reflective element when the adjacent edge of the reflective element is moved away from the back of the cowl. In the opposite direction of adjustment the pillars 9 may buckle or distort but will still maintain pressure on the reflective element. As indicated by FIG. 2 there may be two pillars 9 on each side of the adjustable joint so that the four pillars may be considered as lying at the corners of a rectangle. Alternatively, as shown in FIG. 3, there may be a single pillar 9" of relatively thin elongated cross-section on each side of the adjustable joint. The two pillars 9" are parallel to one another.
The pillars 9' or 9" maintain pressure on the back of the reflective element tending to restore the reflective element to an equilibrium position so that any back-lash in the remote control mechanism 2 is taken up.

Claims (8)

We claim:
1. A rear view mirror for a motor vehicle comprising a housing adapted to be secured to the vehicle, a reflective element, an adjustable joint by which the reflective element is mounted in the housing and which enables the reflective element to be adjusted in relation to the housing to alter the rear view, wherein the housing is a moulding of self-skinning foam plastics material and includes resilient projections which are integrally formed in the foam material of the housing and which bear on the back of the reflective element on opposite sides of the adjustable joint and remote from the adjustable joint.
2. A rear view mirror according to claim 1, wherein the housing is cowl-shaped and has a rim extending over the periphery of the reflective element.
3. A rear view mirror according to claim 2 wherein the rim bears at least on opposite edges of the periphery, resiliently gripping the reflective element.
4. A rear view mirror according to claim 3 wherein the interior of the rim where it makes contact with the periphery is of generally part-spherical form centered on the adjustable joint.
5. A rear view mirror according to claim 4 wherein the interior of the rim has a surface formation which assists in relaxing the reflective element in adjustment.
6. A rear view mirror for a motor vehicle comprising a housing adapted to be secured to the vehicle, a reflective element, an adjustable joint by which the reflective element is mounted in the housing and which enables the reflective element to be adjusted in relation to the housing to alter the rear view, wherein the housing is a mounding of self-skinning foam plastics material comprises pillars and of resilient foam material extending from the housing behind the reflective element and arranged in at least one pair, the pillars of which are symmetrically disposed on opposite sides of the adjustable joint.
7. A rear view mirror according to claim 6 wherein the pillars are of columnar form.
8. A rear view mirror according to claim 6 wherein the pillars are of elongated cross-section and parallel to one another.
US05/871,445 1978-01-23 1978-01-23 Motor vehicle rear-view mirrors Expired - Lifetime US4174823A (en)

Priority Applications (1)

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US05/871,445 US4174823A (en) 1978-01-23 1978-01-23 Motor vehicle rear-view mirrors

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US05/871,445 US4174823A (en) 1978-01-23 1978-01-23 Motor vehicle rear-view mirrors

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411403A (en) * 1981-11-23 1983-10-25 Keeler Brass Company Pivot support bracket for mirror assembly
US6302549B1 (en) 1999-09-07 2001-10-16 Lang-Mekra North America, Llc Mirror mounting assembly with biaxial adjustability
US6352231B1 (en) 1999-04-30 2002-03-05 Lang-Mekra North America, Llc Clamping support for securing rearview mirrors on motor vehicles
US6382804B1 (en) * 1997-02-21 2002-05-07 Mekra Lang Gmbh & Co. Kg External mirror for motor vehicles
US6390634B1 (en) 1997-03-20 2002-05-21 Mekra Lang Gmbh & Co. Kg Assembly for external mirror assembly for commercial vehicles
US6390631B1 (en) 1999-02-05 2002-05-21 Lang-Mekra North America, Llc System for automatic adjustment of external mirrors for motor vehicles when driving in curves
US20020135910A1 (en) * 1999-01-13 2002-09-26 Heinrich Lang Lockable rearview mirror assembly
US6481862B1 (en) 2000-05-05 2002-11-19 Lang-Mekra North America, Llc Lightweight rearview mirror assembly
US6491402B1 (en) 1999-09-07 2002-12-10 Lang-Mekra North America, Llc Mirror mounting assembly with modular components
US6520653B1 (en) 1998-09-02 2003-02-18 Lang-Mekra North America, Llc Honeycomb structure carrier plate for external rearview mirror and related mirror assembly
US20030128446A1 (en) * 2000-06-05 2003-07-10 Gilbert Robert William External vehicle mirror and method for manufacture
US6652107B1 (en) 2000-05-05 2003-11-25 Lang-Mekra North America, Llc Fillable and stiffened rearview mirror assembly
US6793357B2 (en) 2001-12-26 2004-09-21 Lang Mekra North America, Llc Vehicle mirror mounting apparatus and method for assembling same
US6830352B2 (en) 2000-12-22 2004-12-14 Lang Mekra North America, Llc Rearview mirror assembly for motor vehicles
US7009498B2 (en) 2001-04-03 2006-03-07 Lang-Mekra North America, Llc Mirror arrangement for motor vehicles
US7079017B2 (en) 2001-04-23 2006-07-18 Lang-Mekra North America, Llc Warning device in motor vehicles
US20070053087A1 (en) * 2001-03-06 2007-03-08 Emmanuel Courbon Rearview mirror assembly for motor vehicles
US7988106B2 (en) 2007-02-23 2011-08-02 Carnevali Jeffrey D Adaptive mounting structure
JP2013119276A (en) * 2011-12-06 2013-06-17 Ishizaki Honten Co Ltd Side mirror for vehicle

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2457639A (en) * 1945-03-13 1948-12-28 Harry G Brooks Mounting for rear-vision mirrors
US2968995A (en) * 1957-03-08 1961-01-24 Orloff W Holden Portable mirror
US2995983A (en) * 1958-07-02 1961-08-15 Richard H Davis Safety rear view mirrors
US3347513A (en) * 1965-10-23 1967-10-17 Hall C M Lamp Co Pivotable mirror
US3474998A (en) * 1965-03-05 1969-10-28 Yorck Joachim Talbot Outside rearview mirror assembly for automotive vehicles and the like
US3828623A (en) * 1972-07-12 1974-08-13 Ford Motor Co Remote outside rearview mirror
DE2462308A1 (en) * 1973-04-12 1976-11-25 Wingard Ltd EXTERNAL REVIEW MIRROR FOR VEHICLES
FR2315412A1 (en) * 1975-06-23 1977-01-21 Pininfarina Spa Carrozzeria Pivotable rear view mirror for motor vehicles - has mounting fitting into vehicle body, mirror element, and element connecting mounting with mirror

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2457639A (en) * 1945-03-13 1948-12-28 Harry G Brooks Mounting for rear-vision mirrors
US2968995A (en) * 1957-03-08 1961-01-24 Orloff W Holden Portable mirror
US2995983A (en) * 1958-07-02 1961-08-15 Richard H Davis Safety rear view mirrors
US3474998A (en) * 1965-03-05 1969-10-28 Yorck Joachim Talbot Outside rearview mirror assembly for automotive vehicles and the like
US3347513A (en) * 1965-10-23 1967-10-17 Hall C M Lamp Co Pivotable mirror
US3828623A (en) * 1972-07-12 1974-08-13 Ford Motor Co Remote outside rearview mirror
DE2462308A1 (en) * 1973-04-12 1976-11-25 Wingard Ltd EXTERNAL REVIEW MIRROR FOR VEHICLES
FR2315412A1 (en) * 1975-06-23 1977-01-21 Pininfarina Spa Carrozzeria Pivotable rear view mirror for motor vehicles - has mounting fitting into vehicle body, mirror element, and element connecting mounting with mirror

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411403A (en) * 1981-11-23 1983-10-25 Keeler Brass Company Pivot support bracket for mirror assembly
US6382804B1 (en) * 1997-02-21 2002-05-07 Mekra Lang Gmbh & Co. Kg External mirror for motor vehicles
US6390634B1 (en) 1997-03-20 2002-05-21 Mekra Lang Gmbh & Co. Kg Assembly for external mirror assembly for commercial vehicles
US6688749B2 (en) 1997-03-20 2004-02-10 Mekra Lang Gmbh & Co. Kg External mirror assembly for vehicles and method of assembling same
US6520653B1 (en) 1998-09-02 2003-02-18 Lang-Mekra North America, Llc Honeycomb structure carrier plate for external rearview mirror and related mirror assembly
US6840641B2 (en) 1998-09-02 2005-01-11 Lang-Mekra North America, Llc Carrier plate for mirror assembly
US20040114263A1 (en) * 1998-09-02 2004-06-17 Heinrich Lang Carrier plate for mirror assembly
US6702449B2 (en) 1998-09-02 2004-03-09 Lang-Mekra North America, Llc Carrier plate for mirror assembly
US20020135910A1 (en) * 1999-01-13 2002-09-26 Heinrich Lang Lockable rearview mirror assembly
US7631977B2 (en) 1999-01-13 2009-12-15 Lang Mekra North America, Llc Lockable rearview mirror assembly
US6554436B1 (en) 1999-01-13 2003-04-29 Lang-Mekra North America, Llc Horn shaped rearview mirror with supplemental a mirror
US6390631B1 (en) 1999-02-05 2002-05-21 Lang-Mekra North America, Llc System for automatic adjustment of external mirrors for motor vehicles when driving in curves
US6352231B1 (en) 1999-04-30 2002-03-05 Lang-Mekra North America, Llc Clamping support for securing rearview mirrors on motor vehicles
US6491402B1 (en) 1999-09-07 2002-12-10 Lang-Mekra North America, Llc Mirror mounting assembly with modular components
US6302549B1 (en) 1999-09-07 2001-10-16 Lang-Mekra North America, Llc Mirror mounting assembly with biaxial adjustability
US20050057832A1 (en) * 2000-05-05 2005-03-17 Heinrich Lang Fillable and stiffened rearview mirror assembly
US6652107B1 (en) 2000-05-05 2003-11-25 Lang-Mekra North America, Llc Fillable and stiffened rearview mirror assembly
US6669348B2 (en) 2000-05-05 2003-12-30 Lang-Mekra North America, Llc Lightweight rearview mirror assembly
US20040141243A1 (en) * 2000-05-05 2004-07-22 Heinrich Lang Fillable and stiffened rearview mirror assembly
US6824280B2 (en) 2000-05-05 2004-11-30 Lang-Mekra North America, Llc Fillable and stiffened rearview mirror assembly
US7445734B2 (en) 2000-05-05 2008-11-04 Lang Makra North America, Llc Fillable and stiffened rearview mirror assembly
US6481862B1 (en) 2000-05-05 2002-11-19 Lang-Mekra North America, Llc Lightweight rearview mirror assembly
US6896378B2 (en) * 2000-06-05 2005-05-24 Schefenacker Vision Systems Australia Pty Ltd External vehicle mirror and method for manufacture
US20030128446A1 (en) * 2000-06-05 2003-07-10 Gilbert Robert William External vehicle mirror and method for manufacture
US6830352B2 (en) 2000-12-22 2004-12-14 Lang Mekra North America, Llc Rearview mirror assembly for motor vehicles
US7357522B2 (en) 2001-03-06 2008-04-15 Lang Mekra North America, Llc Rearview mirror assembly for motor vehicles
US20070053087A1 (en) * 2001-03-06 2007-03-08 Emmanuel Courbon Rearview mirror assembly for motor vehicles
US7009498B2 (en) 2001-04-03 2006-03-07 Lang-Mekra North America, Llc Mirror arrangement for motor vehicles
US7079017B2 (en) 2001-04-23 2006-07-18 Lang-Mekra North America, Llc Warning device in motor vehicles
US6948822B2 (en) 2001-12-26 2005-09-27 Lang Mekra North America, Llc Vehicle mirror mounting apparatus and method for assembling same
US6793357B2 (en) 2001-12-26 2004-09-21 Lang Mekra North America, Llc Vehicle mirror mounting apparatus and method for assembling same
US7988106B2 (en) 2007-02-23 2011-08-02 Carnevali Jeffrey D Adaptive mounting structure
JP2013119276A (en) * 2011-12-06 2013-06-17 Ishizaki Honten Co Ltd Side mirror for vehicle

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